Science Keywords>ATMOSPHERE>ATMOSPHERIC CHEMISTRY>NITROGEN COMPOUNDS>MOLECULAR NITROGEN
Long-Term Ecological Research (LTER)/HFR004: Ecosystem Response to Chronic Nitrogen Additions
Entry ID: LTER_HFR004

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Summary
Abstract: HFR004: Nitrogen is being added as ammonium nitrate at rates of 50 and
150 kg/ha-yr in oak-maple and red pine stands. Measurements include
nitrogen mineralization, litter decomposition, tree growth, foliar
chemistry, litter chemistry, and CH4, CO2, and N2O fluxes.


The Harvard Forest LTER site (HFR) is primarily Eastern deciduous
forest. Research topics include: long-term climate change; disturbance
history and vegetation dynamics; comparison of community, population,
and plant architechtural responses to human and natural disturbances;
forest-atmosphere trace gas fluxes; organic matter accumulation,
decomposition and mineralization; element cycling, fine root dynamics
and forest microbiology.

Information about LTER is also available on-line at
http://lternet.edu/
Related URL
Link: GET DATA
Description: Access to HFR-LTER datasets.
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates   
  N: 42.0   S: 42.0   E: -71.0   W: -71.0
Max Altitude: SURFACE

Temporal Coverage
Start Date: 1988-05-08
Location Keywords
Science Keywords
ATMOSPHERE > ATMOSPHERIC CHEMISTRY > TRACE GASES/TRACE SPECIES Parameter Definition
BIOSPHERE > TERRESTRIAL ECOSYSTEMS > FORESTS Parameter Definition
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ISO Topic Category
Project
Ancillary Keywords
Originating Center
Harvard
Data Center
Harvard Forest, Long-Term Ecological Research Network Office Supplemental Info
Data Center URL: http://harvardforest.fas.harvard.edu/
Dataset ID: HFR004

Data Center Personnel
Name: RICHARD A. LENT
Phone: 508-724-3302
Fax: 508-724-3595
Email: rlent at fas.harvard.edu
Contact Address:
Harvard University
Harvard Forest
P.O. Box 68
City: Petersham
Province or State: MA
Postal Code: 01366
Country: USA
Personnel
JOHN D. ABER
Role: INVESTIGATOR
Role: TECHNICAL CONTACT
Phone: 603-862-3045
Email: John.Aber at unh.edu
Contact Address:
University of New Hampshire
Complex Systems Research Center
City: Durham
Province or State: NH
Postal Code: 03824
Country: USA
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Publications/References
Aber, J.D., J.M. Melillo, C. McClaugherty and K.N. Eshleman. 1983.
"Potential sinks for mineralized nitrogen following disturbance in
forest ecosystems". Ecological Bulletin (Stockholm), Vol. 35, pp
179-192.
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Creation and Review Dates
Last DIF Revision Date: 2004-02-06

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